categorizedrenderer.h

Go to the documentation of this file.

 
#ifndef OPENSWMM_RENDER_CATEGORIZEDRENDERER_H
#define OPENSWMM_RENDER_CATEGORIZEDRENDERER_H
 
#include "render/ifeaturerenderer.h"
 
#include <QHash>
#include <QString>
 
namespace OpenSWMM::Render
{
 
class CategorizedRenderer final : public IFeatureRenderer
{
public:
    struct Category
    {
        QString     value;   
        QString     label;   
        SymbolStyle symbol;
    };
 
    CategorizedRenderer() = default;
    ~CategorizedRenderer() override = default;
 
    [[nodiscard]] QString classifyAttribute() const { return m_classifyAttribute; }
    void setClassifyAttribute(QString name) { m_classifyAttribute = std::move(name); }
 
    [[nodiscard]] const QList<Category> &categories() const { return m_categories; }
    void setCategories(QList<Category> cats);
    void addCategory(Category c);
 
    [[nodiscard]] const SymbolStyle &fallbackSymbol() const { return m_fallback; }
    void setFallbackSymbol(SymbolStyle s) { m_fallback = std::move(s); }
 
    // IFeatureRenderer.
    [[nodiscard]] QString rendererId() const override { return QStringLiteral("categorized"); }
    [[nodiscard]] SymbolStyle symbolFor(const FeatureRef &f,
                                        const QVariantMap &attrs) const override;
    [[nodiscard]] QList<LegendSymbolItem> legendSymbolItems() const override;
    [[nodiscard]] QJsonObject toJson() const override;
    void fromJson(const QJsonObject &j) override;
    [[nodiscard]] std::unique_ptr<IFeatureRenderer> clone() const override;
 
    // ── Per-class editing (Slice BB Phase 8.6.16) ──────────────────────
    // classKey is the category index as a string ("0", "1", …). The
    // per-class color edit writes the colour into every layer of
    // m_categories[idx].symbol that already has a "color" slot. Symbol
    // swap replaces the whole SymbolStyle on that category. Size / width
    // are not editable here (use setSymbolForClass for full control).
    [[nodiscard]] bool supportsClassEdit(ClassEditKind kind) const override
    {
        return kind == ClassEditKind::Color || kind == ClassEditKind::Symbol;
    }
    [[nodiscard]] QColor colorForClass(const QString &classKey) const override;
    void setColorForClass(const QString &classKey, const QColor &color) override;
    void setSymbolForClass(const QString &classKey, const SymbolStyle &style) override;
 
private:
    QString          m_classifyAttribute;
    QList<Category>  m_categories;
    SymbolStyle      m_fallback;
};
 
} // namespace OpenSWMM::Render
 
#endif // OPENSWMM_RENDER_CATEGORIZEDRENDERER_H